Home

James Samuel Shannon

CIK 1485417 · last filed 2026-06-12

James Samuel Shannon is a corporate insider who has filed 41 SEC Form 4 insider transactions across 4 companies since 2010. The most recent filing, for XLO, was dated Jun 12, 2026. Across all open-market trades the lifetime net is −$1.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $238.0K across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Loading insider history…
Disclosed Exposure

$238.0K

Companies

4

Total Filings

41

Lifetime Open-Market Net

-$1.23M

Filer Profile

Reported Address
28903 NORTH AVENUE PAINE
VALENCIA, CA 91355
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
XLO Director 10,000 $9.00 $90.0K $92.0K 5 2026-06-12
MNKD Director 36,458 $4.06 $148.0K $0 18 2026-05-22
Horizon Therapeutics Public Ltd Co (HZNP) Delisted Director 0 $116.30 $0 -$1.32M 15 2023-10-06
ENDOCYTE INC (ECYT) Delisted Director — — — $0 3 2011-05-31

Recent Filings

41 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-06-12 XLO Grant (A) — $0 EDGAR
2026-05-22 MNKD Grant (A) — $0 EDGAR
2026-03-30 XLO Buy (P) +5,000 $43.9K EDGAR
2026-03-03 MNKD Grant (A) +12,000 $39.2K EDGAR
2025-06-18 XLO Buy (P) +70,000 $48.1K EDGAR
2025-06-12 XLO Grant (A) — $0 EDGAR
2025-05-16 MNKD Grant (A) — $0 EDGAR
2024-06-17 XLO Grant (A) — $0 EDGAR
2024-05-17 MNKD Grant (A) — $0 EDGAR
2023-10-06 Horizon Therapeutics Public Ltd Co (HZNP) Delisted Disp (D) −56,794 -$6.62M EDGAR
Showing 1–10 of 41
Page 1 of 5
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.